Artin's conjecture on primes with prescribed primitive roots
Séminaire Delange-Pisot-Poitou. Théorie des nombres, Volume 18 (1976-1977) no. 1, Talk no. 14, 8 p. 
@article{SDPP_1976-1977__18_1_A11_0,
     author = {Lenstra, H. W., Jr.},
     title = {Artin's conjecture on primes with prescribed primitive roots},
     journal = {S\'eminaire Delange-Pisot-Poitou. Th\'eorie des nombres},
     publisher = {Secr\'etariat math\'ematique},
     volume = {18},
     number = {1},
     year = {1976-1977},
     note = {talk:14},
     zbl = {0369.12010},
     language = {en},
     url = {http://www.numdam.org/item/SDPP_1976-1977__18_1_A11_0}
}

Lenstra, H. W., Jr. Artin's conjecture on primes with prescribed primitive roots. Séminaire Delange-Pisot-Poitou. Théorie des nombres, Volume 18 (1976-1977) no. 1, Talk no. 14, 8 p. http://www.numdam.org/item/SDPP_1976-1977__18_1_A11_0/

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